Experimental and Numerical Analysis of the Heating Performance of a New Skirting Board Radiator with Forced Air Circulation

Document Type : Research Article


1 Department of Mechanical Engineering, University of Kashan, Kashan, I.R. IRAN.

2 Department of Mechanical Engineering, University of Kashan, Kashan, I.R. IRAN



The thermal performance of a new modified hydronic skirting board heating system with an air supply is investigated in the present work. In the modified system indoor airflow is forced through a duct that is located between the systems. The main aim of the present work is to achieve a system with higher efficiency and lower energy consumption than conventional cases. The heat output rate of the system is evaluated experimentally for different water flow rates and inlet water temperatures based on standard No. En-442. A comparison of the results between the new system and the conventional models shows that heating performance improved by about 23%. Thermal comfort conditions in the room are analyzed according to Fanger’s method and results show that people dissatisfied (PDD) in the different parts of the room is less than 40%. Also to validation of the numerical results, the temperature distribution of the simulation is compared with experimental data and obtained results show that there is a good agreement between them.


Main Subjects

[2] Eijdems H.H., Boerstra A.C., Op‘t Veld P.J.M, “Low-Temperature Heating Systems: Impact on Iaq, Thermal Comfort and Energy Consumption”, In Proceedings, Healthy Building 1994, Vol. 94, (1999).
[3] Inard C., Meslem A., Depecker P., Energy Consumption and Thermal Comfort in Dwelling-Cells: A Zonal-Model Approach, Building and Environment, 33(5): 279-291 (1998).
[4] Ploskić A., Holmberg S., Heat Emission from Thermal Skirting Boards, Building and Environment; 45(5): 1123-1133 (2010).
[5] Ploskic A., "Technical Solutions for Low-Temperature Heat Emission In Buildings" Doctoral Dissertation, KTH Royal Institute of Technology (2013).
[6] Ploskić A., Holmberg S., Performance Evaluation of Radiant Baseboards (Skirtings) for Room Heating–An Analytical and Experimental Approach, Applied Thermal Engineering, 62(2):382-389 (2014).
[7] Ploskić A., Holmberg S., “Heat Emission from Skirting Boards–an Analytical Investigation”, In Proceedings of the 3rd International Conference on Built Environment and Public Health, EERB-BEPH 2009At: Guilin - China 2009, (2009).
[8] Hesaraki A., Bourdakis E., Ploskić A., Holmberg S., Experimental Study of Energy Performance in Low-Temperature Hydronic Heating Systems, Energy and Buildings, 109:108-14, (2015).
[9] Wang Q., Ploskić A., Holmberg S., Low-Temperature Heating in Existing Swedish Multi-Family Houses—An Assessment of the Significance of Radiator Design and Geometry, Science and Technology for the Built Environment, 23(3): 500-511 (2017).
[11] Ploskić A., Holmberg S., Low-Temperature Baseboard Heaters with Integrated Air Supply– An Analytical and Numerical Investigation, Building and Environment, 46(1):176-186 (2011).
[12] Ploskić A., Wang Q., Sadrizadeh S., A Holistic Performance Evaluation of Ventilation Radiators– An Assessment According to EN 442-2 Using Numerical Simulations, Journal of Building Engineering, 25: 100818 (2019).
[13] Myhren J.A., Holmberg S., Performance Evaluation of Ventilation Radiators, Applied Thermal Engineering, 51(1-2): 315-324 (2013).
[14] Myhren J.A., Holmberg S., Design Considerations with Ventilation-Radiators: Comparisons to Traditional Two-Panel Radiators, Energy and Buildings, 41(1): 92-100 (2009).
[15] Gheibi A., Rahmati A.R., An Experimental and Numerical Investigation on Thermal Performance of a New Modified Baseboard Radiator, Applied Thermal Engineering, 163:114324 (2019).
[16] Incropera F.P., Lavine A.S., Bergman T.L., DeWitt D.P., “Fundamentals of Heat and Mass Transfer”, John Wiley & Sons, Inc. (2018).
[17] James A.F., “Introduction to Fluid Mechanics”, Cambridge: MIT Press, MA; (1994).
[18] Crowe C.T., Elger D.F., Roberson J.A., Williams B.C., “Engineering Fluid Mechanics”, 9th ed., John Wiley & Sons, Inc.  (2008).
[19] Alvarez H., "Energiteknik (Energy Technology)", pp. 360-374, Chapter 5.3, (2003) [in Swedish].
[20] Gnielinski V., New Equations for Heat and Mass Transfer in Turbulent Pipe and Channel Flow, Int. Chem. Eng., 16(2): 359-368 (1976).
[22] Nicol J.F., Humphreys M.A., New Standards for Comfort and Energy Use in Buildings, Building Research & Information, 37(1): 68-73 (2009).
[23] Omori T., Tanabe S.I., Akimoto T., “Evaluation of Thermal Comfort and Energy Consumption in a Room with Different Heating Systems”, In IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment (2007).